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IPM Scouting in Stone Fruits

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Powdery mildew or rusty spot of peach - Sphaeroteca pannosa (Wallr.:Fr.) Lév
IPM scouting in stone fruits > powdery mildew or rusty spot of peach
This disease is found sporadically on peach in the mid-Atlantic and southeastern U.S. White circular spots on young fruit (top photo) expand in size and later the mycelium may slough off, leaving a russeted patch with dead epidermal cells (bottom photos). The russeted area expands as the fruit enlarges. Leaves and shoots are superficially covered with white, felt-like mycelium and eventually become distorted and stunted.
Rusty spot of peach Rusty spot of peach Rusty spot of peach
Additional information
Images on this page provided by Alan L. Jones.

This information was developed from A Pocket Guide for IPM Scouting in Stone Fruits by David Epstein, Larry J. Gut, Alan L. Jones and Kimberly Maxson-Stein. Purchase this in a pocket-sized guide for reference in the orchard from MSU Extension (publication E-2840).
The MSU IPM Program maintains this site as an access point to pest management information at MSU. The IPM Program is administered within the Department of Entomology, fueled by research from the Michigan Agricultural Experiment Station, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.
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Updated 7/24/07